That's the basics. The next level is, what if you want one process dying to interrupt and trigger killing another process that is associated with it -- perhaps

That's the basics. The next level is, what if you want one process dying to interrupt and trigger killing another process that is associated with it -- perhaps it's the parent in an rpc -- that's the easiest case (and trigger the correct exception message in the logs of both nodes) Oh. And it's on the other side of a cluster. Sure, you could do it in Python or rust. It won't be zero lines of code. You're probably gonna get it wrong.